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Finding the Fourth Proportional to 500.74, 750.30 and 355.75

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Solution

The fourth proportional to 500.74, 750.30 and 355.75 is: 533.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.74 : 750.30 = 355.75 : x
  2. Step 2: Convert to fraction form
    500.74/750.30 = 355.75/x
  3. Step 3: Cross multiply
    500.74x = 750.30 × 355.75
  4. Step 4: Simplify right side
    500.74x = 266,919.23
  5. Step 5: Solve for x
    x = 266,919.23/500.74
  6. Step 6: Final answer
    x = 533.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.